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Harris 425 Series single-stage gas regulator, chrome-plated brass body with pressure gauges and control knob

Harris

Harris 425 Series Gas Regulator 0-125 psi 2.75" Medical Air

SKU CH-9M1Q-E7DAT

Single-stage brass regulator delivers 0-125 psi medical air via CGA 346 inlet and 9/16-18 UNF outlet

  • Main materialHAWA
  • Product typeSingle Stage Cylinder
  • Delivers up to 125 psig outlet pressure for precise medical air control
  • Single-stage cylinder design provides reliable pressure reduction in one step
  • Chrome-plated brass body resists corrosion for long service life
  • Neoprene diaphragm ensures consistent sealing under varying conditions
  • CGA 346 inlet with 0.825-14 male connection fits standard medical air cylinders

Harris 425 Series Medical Air Regulator

The Harris 425 Series is a single-stage cylinder regulator designed for medical air delivery. It provides an outlet pressure range of 0 to 125 psig with a maximum inlet gauge pressure of 4,000 psig. The unit features a chrome-plated brass body and a neoprene diaphragm for reliable operation in industrial and medical gas applications.

Verify CGA 346 and Connection Compatibility

Before ordering, confirm your cylinder uses a CGA 346 valve outlet for breathing air service. The regulator inlet is a male NGO connection sized .825 in.-14, while the outlet is a male UNF connection sized 9/16 in.-18. Ensure your downstream equipment matches these thread specifications and that the single-stage design suits your pressure stability requirements.

Suits Fixed Medical Air Supply Points

This regulator suits facilities needing a dedicated medical air control point with a 2.75 inch gauge for clear pressure monitoring. It is not intended for users requiring multi-stage pressure regulation for ultra-stable flow or for gas types other than breathing air. Buyers needing different CGA fittings or outlet thread standards should select an alternative model.

How it compares

Measured against everything we stock in Welding Equipment & Positioners, at today’s prices. Recalculated every night.

Price $178.99
Pricier than about 77% of the 1,978 comparable items (median $50.99).

Specifications

Product
Brand nameHarris
Product typeSingle Stage Cylinder
Size & build
Main materialHAWA

Questions about this item

Does the Harris 425 Series regulator ship with a hose or fittings, or must they be purchased separately?

The regulator has a CGA 346 male inlet and a 9/16 in.-18 UNF male outlet; hose and mating fittings are not included and must be sourced separately.

How does the 0-125 psig outlet range suit medical air delivery compared with higher-pressure models?

The 125 psig maximum outlet is designed for low-pressure breathing air systems; higher-pressure models would exceed the safe delivery pressure for this application.

What does the 2.75 in. gauge diameter mean for reading outlet pressure on the machine?

The 2.75 in. dial provides a clear, direct reading of the 0-125 psig outlet pressure without needing a separate gauge.

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